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Re: Difference in execution plans pg12 vs pg14

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On 12/10/21 17:00, Дмитрий Иванов wrote:
Afternoon. I was able to make the necessary changes to my base needed to migrate win_pg12 to debian pg14. But there is a new problem, which was not there at the initial stage so I checked:

win_pg12:
->  Index Scan using index_class_tree_full on class c  (cost=0.28..2.50 rows=1 width=235) (actual time=0.030..0.032 rows=1 loops=1)
                      Index Cond: (id = 650)
debian_pg14:
->  Index Scan using index_class_tree_full on class c  (cost=0.28..2.50 rows=1 width=235) (actual time=842.795..842.796 rows=1 loops=1)
                      Index Cond: (id = 650)

I'm wondering where to dig next...

Did you run ANALYZE(updates table stats) on the 14 instance after doing the upgrade?

--
Best regards, Dmitry!


--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx





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